Welcome to my Top Swiss Chronometers Boutique: With its passion for innovation and technical inventiveness, IWC Schaffhausen has established an international reputation. Since 1868, manufacturers have been creating masterpieces of haute horlogerie. IWC mechanical timepieces are handcrafted with meticulous attention to detail, combine precision engineering with extraordinary timeless design, bringing finest technology and unique emotions to the wrist. To differentiate their mechanical offerings from the growing crowd of modernist quartz watches, IWC launched the Portofino line in 1984 as a “pocket watch for the wrist.” Designed to suggest a “marriage” watch, the Portofino features a thick, rounded case with a prominent crown, a plain dial with Roman numerals, and slim feuille hands. Although often compared to dress watches like the Patek Philippe Calatrava, the Portofino's Lepine “pocket watch” design is quite different. The first Portofino, 1984's Ref. 5251, used a classic hand-wound movement with small seconds at 09:00 o'clock. IWC released a classically-styled dress watch in the Portofino line in 1993, competing at last with the Calatrava. Movement: - self-winding calibre 30110 - single barrel - frequency: 28,800 A/h - 25 jewels - 42 hours power reserve Case: - 316L stainless steel - polished - 39mm excl. crown, 40,3mm incl. - thickness: 8,8mm - stainless steel case-back with engravings - unique No: 3331*** (for buyer only), the best proof of authenticity Scratch resistant anti-reflective sapphire crystal Bezel: - 316L stainless steel - fixed - polished Crown; - polished stainless steel with logo - push/pull Dial: - noble black matte, looks blue due to anti-reflective coating - polished feuille hands and hour batons - minute markers around the outer rim - date aperture at 03:00 o'clock position Strap: - brand new black leather, Louisiana crocodile skin on calf - length: ca. 21cm - width: 20mm by lugs, 16mm by clasp Clasp: - folding with logo - 316L stainless steel - polished Weight: 69 grams Water-resistant 30meters/3ATM/100feet, not recommended for swimming and diving. Full set. Chic white IWC watch box with IWC travel box inside (see pics). Excellent condition, never worn: the wristwatch comes from luxury watch-shop showcase; that's why the strap is replaced with brand new one (leather straps often suffer from temperature in shop windows due to powerful spotlights). General professional pre-sale service was made in December 2025: the watch is keeping good time and working perfectly. 100% authentic Swiss made. My personal authenticity and quality warranty: you will get warranty card (as pictured), fully completed, stamped and signed. Insured, registered shipping worldwide with DHL Express: it’s not cheap, and yet fast and reliable, two days in Europe, three days for the rest of this world. Everything you see in my pics is included in the package that you'll receive. My personal opinion, based on 30+ years of collecting experience: 'Portofino' is one of most beautiful cult wristwatches ever; this incredible purity and clarity of lines is an undoubted sign of the most noble breed! NO EXTRA COSTS for EU Buyers.